兰州形变与景泰地震的短临前兆  

The relationship between the short-imminent precursors ofJingtai earthquake and the deformation of Lanzhou Statlon

作　　者：唐九安[1] 彭伟荣[1] 常千军[1] 周志宇 

机构地区：[1]国家地震局兰州地震研究所,兰州观象台

出　　处：《地震地磁观测与研究》1995年第3期41-45,共5页Seismological and Geomagnetic Observation and Research

基　　金：国家地震局科技监测司"地震监测预报;科研"三结合专项经费资助.

摘　　要：对比分析了兰州形变水管倾斜仪（ＦＳＱ）、水平摆倾斜仪（ＳＱ７０Ｂ）和石英伸缩仪（ＳＳＹ）于是泰地震前后观测结果中的非潮汐变化，探讨了它们对景泰地震的短期和临震前兆响应，结果表明，倾斜仪ＮＳ向于霞前半月内有倾向震中的、幅度约０．１″的短临前兆显示。In this paper,the non-tidal variations in the observation data of Ltanzhoudeformation station during 1990 were analysed. The short-term and imminent anomalyof Jingtai earthquake(Oct.20,1990,M_s6.2,△=110 km,A_z=N9°W)was studied bycomparing the data before the shock with the data after the shock.The results showthat there was obviously short-imminent anomaly in the observation data of tiltmeters ofNS direction and the order of magnitude of the anomaly is about 0.1-0.2″·

关 键 词：地震 短临前兆 临震预报 水管倾斜仪 地变形 

分 类 号：P315.7[天文地球—地震学]